Alergo 120mg Tablet is an anti-allergy medicine used in the treatment of allergic symptoms such as runny nose, congestion or stuffiness, sneezing, itching, swelling, and watery eyes. It also helps treat skin allergies with itching, redness, or swelling. Alergo 120mg Tablet may be taken with or without food, in the dose and duration as advised by the doctor. The dose you are given will depend on your condition and how you respond to the medicine. You should keep taking this medicine for as long as your doctor recommends. Do not stop taking it without consulting your doctor. The most common side effects are headache, drowsiness, dizziness, and Nausea. Most of these are temporary and usually resolve with time. Please consult your doctor if any of these side effects do not resolve or persist for a longer duration.